HartsfieldâJackson Atlanta International Airport has been the world's busiest airport every year since 2000; with all airports combined London has the world's busiest city airport system by passenger count.
Tension or Temperature. Dogs may shake as a way of relieving tension. If a dog is feeling nervous or uncomfortable in a situation, it might shake the whole body as a way of shaking out tension. This behavior also may function as a means of getting attention from other dogs or people.
Serious infections are most often seen in puppies or adolescent dogs. Puppies younger than seven weeks, born to mothers who havenât been vaccinated against the virus, are extremely susceptible. Once infected, puppies are severely weakened. Often the virus travels to the brain, causing seizures, shaking and trembling.